Academic mobility for self-realization in science
ETU "LETI" master's degree student from Indonesia made a presentation at the international SPIE Optics + Optoelectronics 2019 conference, which took place in the Czech Republic.
From April 1 to April 4, the SPIE Optics + Optoelectronics 2019 conference, which presents the latest achievements in the field of laser technology from around the world, took place in Prague (Czech Republic). Leading researchers, engineers and program managers shared the results of research in the field of optics and photonics, as well as exchanged information on the latest technologies in plenary meetings, conferences, and seminars.
ETU "LETI" representative Rahman Ardi (Indonesia), 2nd-year undergraduate of the Faculty of Information Measurement and Biotechnical Systems, who is studying under the English-taught "Sensing Photonics Technologies” master's program, took part at the conference. The novice researcher presented an article entitled “Reducing Uncertainty of Standard Reference Ring Measurement Up to 50 nm by Means of Non-contact Method,” which was the result of his joint work with Andrei Moskalev, Senior Researcher at the D. I. Mendeleyev Institute for Metrology. This article is part of a student’s master thesis.
According to the researcher, the work is relevant because today only 35 of the 157 countries have sufficient calibration and measurement capabilities for the internal diameter measurement, while 93% of them have uncertainty values above 100 nm. This fact shows the inequality of measuring capabilities among the countries in the world. To solve this problem, work was done to meet the need for high-precision measurements of the inner diameter. “Non-contact method is well known as a high-accuracy measurement method instead of a contact method. The use of optical probe excludes such effect as the deformation of the artifacts and the mechanical probe diameter effect as well. Another thing that we improve is the usage of He-Ne laser stabilized with an I2 measurement system to increase the accuracy and to reduce the uncertainty. This research explained the uncertainty sources of the method applied and the efforts that have done to reduce it to 50 nm,” Rahman Ardi explained.
“The most impressive moment for me during SPIE 2019 was of course when I presented my work and tried to answer the challenging questions about my work. In addition, I was impressed when I heard the special lecture from Gerard Mourou (France), 2018 Physics Nobel Prize Laureate. I realize that Ultrafast Laser Pulses is a very promising field on the supplying energy for humankind in the future.”
This research is very useful for industry, research institutions and the practitioners of metrology at NMIs to improve the accuracy of their internal diameter measurement system. The work of the ETU undergraduate will be published in the SPIE conference series, which are indexed by the Scopus database. “Our little contribution in science, will better the world,” Rahman Ardi says.
"I came to study at ETU because there is an opportunity to conduct research in Russian Metrology Institute. Therefore, it is a big opportunity for me to realize it. In the beginning, Prof. Yuriy Filatov from the Department of Laser Measurement and Navigation Systems helped me a lot in this."
Participation in the SPIE 2019 conference was the second experience for Rahman at international scientific forums. For the first time, the student presented his work "Design of Spin Coater and Characterization of Spin Coating Process" at the SPIE 2018 conference, which was held at the University of Trento (Italy) in February 2018.
“ETU plays a large role in my scientific work, namely, it supports me at international conferences and provides good curriculum especially in Laser for Metrology, and it helped me to grow as a researcher.”
In 2007, Rahman Ardi received a bachelor's degree in Physics Engineering at Gadjah Mada University in Indonesia. Now, he is studying at the St. Petersburg Electrotechnical University "LETI" under the "Sensing Photonics Technologies" master's program at the expense of the state scholarship of Indonesia. Since 2011, he has been a junior researcher at the Research Center for Metrology, LIPI, National Institute of Metrology, Indonesia.
Rahman Ardi has an average score of 4.85. During his studies at ETU, he published two scientific articles, one of which is indexed by the Scopus database, and received funding from the university for attending several conferences.